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Li-ion 18650 3.6V 2200mAh Cell

Li-ion 18650 3.6V 2200mAh Cell Cycle life is super long; 100%DOD could reach 1000 times; Two time of normal li-ion 18650 cell Fast Charge: Support max 1C charge rate, which making charging time decreased to be 1 Hour Powerful output ability; Support max 3C constant discharge, 5C pulse discharge...
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Li-ion 18650 3.6V 2200mAh Cell 

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  • Cycle life is super long; 100%DOD could reach 1000 times; Two time of normal li-ion 18650 cell

  • Fast Charge: Support max 1C charge rate, which making charging time decreased to be 1 Hour

  • Powerful output ability; Support max 3C constant discharge, 5C pulse discharge

  • No Memory effect

  • Working temperature range is wide

  • CE / RoHS / UN38.3 / MSDS / UL 1642 / IEC 62133 / CB


Product parameter

No.

Item

Standard

Note

1

Standard Capacity

2200mAh

0.5C,( current value of 2200mA at 1C)

2

Capacity Range

2150~2250mAh

0.5C

3

Standard Voltage

3.6 V


4

Alternating Internal Resistance

≤30mΩ


5

Charge Conditions

Cut-off Voltage

4.2±0.05V

constant-current charge to 4.2V at 0.5C,constant voltage charge to stop until 0.01C mA

Cut-off Current

0.01C

6

Max. Charging Current

2.2A


7

Discharge Cut-off Voltage

2.75V

 

8

Standard Discharge Current

1.1A


9

Fast Discharge Current

2.2A


10

Max. Continuous Discharge Current

6.6A


11

Pulse Discharge Current

10A,5s


12

Cycle Characteristic

1000times(100%DOD)

he residual capacity is no less than 70% of rated capacity at 0.5C Charge,1C Discharge rate.

1500 times(80%DOD)

3000 times(50%DOD)

13

Working Temperature

Charge:0°C~55°C Discharge:-20°C~60°C


14

Storage Temperature

-20°C ~ 45°C

Short-term storage (< 3 months)

15

Battery Weight

45g (Approx.)



The product test data curve




 

When the battery is charged, lithium ions are generated on the positive electrode of the battery, and the generated lithium ions move to the negative electrode through the electrolyte. The carbon as the negative electrode has a layered structure, and it has many micropores. The lithium ions reaching the negative electrode are embedded in the micropores of the carbon layer, and the more lithium ions are embedded, the higher the charging capacity.

Similarly, when the battery is discharged (ie, the process we use the battery), the lithium ions embedded in the carbon layer of the negative electrode come out and move back to the positive electrode. The more lithium ions return to the positive electrode, the higher the discharge capacity.

Generally, the charging current of the lithium battery is set between 0.2C and 1C. The larger the current, the faster the charging and the greater the heat of the battery. Moreover, excessive current charging, the capacity is not full, because the electrochemical reaction inside the battery takes time. Just like pouring beer, if it is too fast, it will produce bubbles, but it will not be full.


For batteries, normal use is the process of discharging. Need to pay attention to the discharge of lithium battery:

1. The discharge current should not be too large. Excessive current will cause the internal heat of the battery, which may cause permanent damage. On the mobile phone, this is no problem, you can not consider it.

2. Never over discharge! Lithium batteries are most afraid of overdischarge. Once the discharge voltage is lower than 2.7V, the battery may be scrapped.

Fortunately, the inside of the mobile phone battery has been installed with a protection circuit, the voltage is not low enough to damage the battery, the protection circuit will work, stop discharging. As can be seen from the figure, the larger the discharge current of the battery, the smaller the discharge capacity and the faster the voltage drop.

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